@article{BringmannMutanyattaComarMaksimenkaetal.2008,
  author    = {Gerhard Bringmann and Joan Mutanyatta-Comar and Katja Maksimenka and John M. Wanjohi and Matthias Heydenreich and Reto Brun and Werner E. G. M{\"u}ller and Martin G. Peter and Jacob O. Midiwo and Abiy Yenesew},
  title     = {Joziknipholones A and B : the first dimeric phenylanthraquinones, from the roots of Bulbine frutescens},
  url       = {http://www3.interscience.wiley.com/journal/26293/home?CRETRY=1\&SRETRY=0},
  year      = {2008},
}